Power take-off attachment



May 28,

POWER TAKE- OFF ATTACHMENT Filed Nov. 2, 1939 INVENTOR av wayaw ea ATTO RN EYS R. o. JOHNSON 2,202,345

Patented Ma 28.1940 3 I II 2,202,345,

UNITED STATE-S PATENT OFFICE I i I .2,202,s45 s I 'rowER TAKE-OFF ATTACHMENT Rudolph 0. Johnson, Bedford, Pa. 1 Application November I2, 1939, Serial No.'302,606

3 Claims. (01. 180 -53) p This invention relates to; power take-ofi at ring gear 23,'which latter is provided with an intachments and has for .an object to providea tegralsubstantially funnel shaped cage bearing" power take-off attachment adapted to be applied 24 which floats in the axle housing} to the rear wheel and axle of a motor vehicle. The spunezu is of such length that it engages A further object is to provide a device of this bothspline gears 2| of the differential when the 5 character which may be easily coupled and unaxle I8 is moved inwardly butzonly engages the coupled from the wheel. v spline gear 2| shown on the right of Figure 1 A further object is to provide adevice of this when the axle is moved outwardly. I Thus the character which will be formed of afew strong axle is rotatedat all times, but when the axle is 10 simple and durable parts, which will be inexmoved inwardly to engage the pline. with both 1;

pensive to manufacture. and which will not eas-v spline gears 2|, the outer spline 19 of the axle ily get out of order. a is withdrawn from the spline H of the sleeve l3 With theabove and otherobjects in view the and the wheel is uncoupled from the axle.

invention consists of certain novel details of con- As best shown in Figure 4, the axle I8 is pro- )5 struction and combinations of parts hereinafter vided, beyond itsouter spline IS, with a pair of 5;;

fully described and; claimed, it being understood annular r v 5 nd 6 n e tri wi h th that various modifications may be resorted to axis of the axle and with a longitudinal. groove within the scope-of the appended claims with- 21 which extends from the inner annular groove .out departing from the spirit or sacrificing any 25 u t t r annular groove 26 a d terof the advantagesof the invention. minates at the end ofthe axle. A latch 28 is In the accompanying drawing forming a part secured to the sleeve I3 by a screw 29 and is proof this specification: I vided with a finger. 30 which extends through an Figure 1 is a plan View of a power take-off atopening in the sleeve and is adapted to be entachinent constructed in accordance with the in-. V gaged the inner annular groove 25 when the 25 vention, shown applied to a motor vehicle rear axle is pulled outwardly to engage the spline I4 7 axle. of the sleeve with the outer spline I9 of the axle Figure 2 is a longitudinal sectional view of the to couple the axle to' the wheel. The finger rides power take-off device uncoupledfrom the, rear in the longitudinal groove 21 and. lodges in the wheel. I I outer annular groove 26 when the axle is pushed {in Figure 3 is a cross sectional View taken on the efv inward y to dise gage the spline ll of 39 line 3-3 of Figure 2. the sleeve fromthe spline IQ of the axle to un- Figure 4 is a detail perspective view of one end couple the wheel from the axle. II I I of the axle showing the longitudinal and spaced When the wheel'is uncoupled from the axle as circumferential spline grooves. above explained power may be taken from the Figure 5 is a side elevation of the ball bearaxle and for this purpose preferably a power ing which supports the axle when in pulley drivtake-off pulley 3| is secured to the end of the ing position. axle by akey 32 which is engaged in the outer Referring 0W 0 e drawing in which like end of the longitudinal groove 21, and by a nut characters of reference designate similar parts 9 hi h i threaded on to the endof the axle.

in the various views, l0 designates the rear axle h axle is supported in pulley driving position pu a ua pe r wheels. 12 the by a'ball bearing assembly 33 which is confined dlfierentml, of motol: e in an annular housing 34 best shown in Figures In carrymg out e mventwn as shown m 2 and 5. The housing is formed integral with me sleeve provided" having on the inner the sleeve l3. The seat member 35 of the ball periphery a Spline as shwn best in Figure bearing assembly is provided with a spline as Thelsleevg is provided one end with which is engaged in the outer end' of the lon- 3,? arrears-:2 as. 21 e w I rounds the rear axle l8 which latter is provided s g f g fig gf gjggg i s zg fi g if g with an outer spline l9 adapted to interfit the spline M of the sleeve to couple the rear wheel whlch h Filready been The other The axle is al provided t section-1s slidably mounted in the hub 31 of the to the axle I I I I I ner spline 20 adapted to couple the axle to the left rear wheels and is provided on its inner end differential spline gears 2| which mesh with with a spline 38. The outer end of the left axle ed by the differential section is provided with a flange 39 which is pro- 5 planetary gears 22 earn vided with screw bolts adapted to detachably secure the flange to the hub 31.

Under normal driving conditions the right section of the axle I8 is disposed outwardly so that the inner spline 20 engages the right spline gear 2|, and the left axle section is disposedinwardly so that the spline 38 engages the left spline gear 2|. Also the flange 39 is bolted to the hub 37. Also the outer spline I9 of the right section of the axle is engaged with the spline M of the sleeve l3. In this position of the parts the wheels are coupled to the axle to be driven by the difierential through the propeller shaft 4! and bevel gear 42 which is enmeshed with the ring gear 23.

When it is desired to take off power from the axle the flange 39 of the left section of the axle is disconnected from the left wheel and the axle section is drawn outwardly to disengage the spline 38 from the differential as shown in Figure 1. Then the right section of the axle is moved inwardly to engage the inner spline 20 with both spline gears 2| of the difierential and to disengage the outer spline l9 of the axle from the sleeve l3, as shown in Figure 2. In this position of the parts the 'right and left dual rear wheels are disconnected from the rear axle and the right section of the rear axle is connected to the difierential to be driven at variable speeds by the difierential to drive the power take-01f pulley 3|.

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

1. A power take-oil? attachment for motor vehicles comprising the combination with the rear wheel, axle housing and difierential of a motor vehicle, of a sectional axle movable endwise in the housing, a sleeve on one outer end of the axle fixed to the wheel, a spline on the inner surface of the sleeve, an outer spline on the axle adapted to be engaged with the spline oi the sleeve for rotating the wheel when the axle is moved outwardly and adapted to be disengaged from the spline of the sleeve to uncouple the wheel from the axle when the axle is moved inwardly, a ball bearing carried by the sleeve supporting the axle, a power take-01f pulley on the axle adjacent the bearing, and an inner spline on the axle engaged at all times with the difierential for selectively driving the wheel or the pulley.

2. A power take-off attachment for motor vehicles comprising the combination with the rear Wheel, axle housing and differential of a motor vehicle, of a sectional axle movable endwise in the housing, a sleeve on one outer end of ,the axle fixed to the wheel, a spline on the inner surface of the sleeve, an outer spline on the axle adapted to be engaged with the spline of the sleeve for rotating the wheel when the axle is moved outwardly and adapted to be disengaged from the spline of the sleeve to uncouple the Wheel from the axle when the axle is moved inwardly, a ball bearing carried by the sleeve sup-' porting the axle, said axle having a pair of spaced circumferential grooves connected by a longitudinal groove, a latch secured to the sleeve and adapted to be selectively engaged in the circumferential groove to hold the axle at either limit of its endwise movement, a power take-off pulley on the axle adjacent the bearing, and an inner spline on the axle engaged-at all times with the: differential for selectively driving the Wheel or the pulley.

3. A power take-off attachment for motor Vehicles comprising the combination with the rear Wheels and axle housing of a motor vehicle, of a diflerential having a ring gear, a funnel-shaped cage bearing connected to the ring gear and mounting the ring gear to float in the axle housing, planetary gears carried by the ring gear, a pair of spline gears driven by the planetary gears, a sectional axle movable endwise in the housing, one section of the axle being removably secured to one of the rear wheels of the axle and having a splineadapted to engage one of said spline gears, the other section of the axle having a spline adapted to engage both spline gears when the first named axle section is moved outwardly and adapted to engage one of the spline gears when moved endwise outwardly, a sleeve on the outer end of the last named section of the axle fixed to the other rear wheel, a spline on the inner surface of the sleeve, an outer spline on the last named axle section adapted to be engaged with the spline of the sleeve for rotating the wheel when the axle section is moved outwardly and adapted to be disengaged from the spline of the sleeve to uncouple the wheel from the axle when the axle section is moved inwardly, a ball bearing carried by the sleeve supporting the last named axle section, and a power take-oil pulley on the last named axle section adjacent the sleeve.

RUDOLPH O. JOHNSON. 

